Articles and Tips

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• 10 Reasons Why a Mini-Split Ductless Flare May Leak Refrigerant!

• 20 Causes of Low Indoor Airflow on Ducted HVAC Units!

• 40 Vacuum Tips for HVACR Technicians! Avoid Frustration!

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• Adjusting the Airflow Speed on ECM Blower Fan Motors! (Variable & Multi-Speed Types)

• Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor!

• An Additional Valve Core Removal Tool for your Vacuum Gauge! (Quick Tip)

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• Can I measure a Negative Subcooling When Checking the Charge?​

• Can you Braze Mini-Split systems instead of Flaring them?

• Charging a System in a Dry Climate? Consider a TXV and Accumulator!

• Checking the Charge of Air Conditioners without Measuring Pressure!​

• Checking the Charge of a Mini-Split Unit!

• Clogged Liquid Line Filter Drier?

• Connect Your Gauges Sooner Than Later! (Quick Tip)

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• Determining the Cause of a Liquid Line Restriction Problem!

• Ductless Mini-Split Installation Step by Step

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• Filter Drier, Solenoid Valve and Liquid Line Sight Locations in a Refrigeration System

• Finding a Low Voltage Short Quickly, Step by Step!

• Free Shrader Valve Refrigerant Leak Tester (Quick Tip)

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• Gas Furnace Electrical Safety Switch Testing!

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• Heat Pump Pressure Switches

• How NOT to Check the Refrigerant Charge!

• How the Gas Pilot Light Functions and 10 Reasons Why the Pilot Light Goes Out or Won’t Stay Lit!

• How to Find Common, Start, and Run on a PSC Compressor Motor!

• How to Tell if a TXV Has Lost Part of its Bulb Charge! (Quick Tip)

• HVAC DELTA T (ΔT) Explained for Air Conditioners!

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• Is a Triple Evacuation Necessary for a Deep Vacuum?

• Is There an Easy Way to Tell if a Mini-Split Ductless Unit is Low on Refrigerant? (Quick Tip)

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• Measuring a Liquid Line Restriction Problem!

• Measuring Negative Superheat on an Air Conditioner? (Quick Tips)

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• Newer Methods that Make us Better Techs and Reduce Labor and Frustration! Top 15!

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• Protect Your Micron Gauge! (Quick Tip)

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• R-22 and R-410A Operating Pressures, Charging and Recovery Setup!​

• Recovery Bottle Weight

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• Should I Check the Refrigerant Charge with Superheat or Subcooling?

• Superheat vs. Total Superheat

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• Target Superheat

• Testing Capacitors

• The Benefits of Using an Ultrasonic Leak Detector to Find Refrigerant Leaks!

• The HVAC Subcooling Charging Method, Explained!

• The Total Weight Method

• Top 4 Reasons Why a Gas Furnace Short Cycles

• Top 10 Gas Water Heater Pilot Light Problems! When It Won’t Stay Lit!

• Top 10 Thermostat Related Problems

• Troubleshooting an Air Conditioning System with a Frozen Evaporator

• Troubleshooting an HVAC Control Board? How?

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• Understanding Triple Evacuation

• Using the Total Superheat Charging Method for HVAC Units!

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• What Components are in a Forced Air Gas Furnace? What do they Do?

• Why Can’t You Just Measure Pressures to Check a Refrigerant Charge?

• Why Do Some Evap Coils Leak While Others Do Not? (Quick Tip)